CN108784715A - Single-blade punctures needle shield and blood taking needle - Google Patents

Abstract

The invention provides a sheath assembly for a single-winged puncture needle, which includes a sheath, a needle tube holder and a needle handle. Sliding and rotating in the cavity, the sheath is provided with a first opening slot and a second opening slot, the first opening slot communicates with the second opening slot, the first opening slot is provided with a first limit mechanism, before use, the first The limit mechanism is used to clamp the needle handle in the first open groove so that the needle tube seat is fixed in the cavity of the sheath; a second limit mechanism is arranged in the second open groove, and the needle handle can be placed in the second open groove. After use, the second limit mechanism is used to block the needle handle so that the needle tube seat is fixed in the cavity of the sheath. The single-winged puncture needle sheath assembly can prevent the needle tube from being exposed and avoid the needle tube from accidentally stabbing people, thereby effectively improving safety. The present invention also provides a blood collection needle using the single-wing puncture needle sheath assembly.

Description

Single wing puncture needle sheath assembly and blood collection needle

technical field

The invention relates to the technical field of medical equipment, in particular to a single-wing puncture needle sheath assembly and a blood collection needle.

Background technique

Puncturing a patient's body with a stainless steel needle is an essential operation in projects such as infusion and blood collection. Infusion and blood collection require the use of infusion devices and blood collection devices. The existing infusion devices and blood collection devices on the market pull out the sheaths. After the medical staff completes the blood collection, the needle tip of the needle tube is exposed.

After completing operations such as infusion and blood collection, since the needle tip is exposed outside without any protective measures, the medical staff may be slightly careless in the operation, and they are easily stabbed by the needle tip of the contaminated puncture needle, resulting in cross-infection of the virus. If the patient Suffering from infectious diseases, the consequences are more serious. In clinical practice, accidental acupuncture is a long-standing and unavoidable problem.

Therefore, designing a kind of anti-acupuncture safety device that protects the needle point and avoids accidentally stabbing people is beneficial to the protection of medical personnel and is also an urgent demand in the market.

Contents of the invention

In view of the above situation, one aspect of the present invention provides a needle-resistant single-wing puncture needle sheath assembly to enhance safety.

A single-winged puncture needle sheath assembly, comprising a sheath, a needle tube seat and a needle handle, the needle handle is arranged on the needle tube seat, the needle tube seat is arranged in the cavity of the sheath, and the The needle tube seat can slide and rotate in the cavity of the sheath, the sheath is provided with a first opening groove and a second opening groove, the first opening groove communicates with the second opening groove, and the first opening groove communicates with the second opening groove. A first limit mechanism is provided in an open slot, and before use, the first limit mechanism is used to clamp the needle handle in the first open slot, so that the needle tube holder is fixed on the protective cover. In the cavity of the sleeve; a second limit mechanism is provided in the second open slot, and the needle handle can slide in the second open groove. After use, the second limit mechanism is used to release the The needle handle is locked so that the needle hub is fixed in the cavity of the sheath.

According to the above-mentioned single-wing puncture needle sheath assembly, the needle tube seat can be connected with a needle tube for blood collection or an infusion set for infusion, and the needle handle is clamped in the first opening groove by the first limiting mechanism before use , so that the needle tube seat is fixed in the cavity of the sheath to avoid product failure caused by needle tube exposure; when blood collection or infusion is required, hold the sheath with one hand and the needle handle with the other hand, and move the needle handle to the second Break the direction of the second opening slot, and push it through the first limit mechanism, so that the needle handle falls from the first opening slot into the second opening slot, then pinch the needle handle, and push it to the bottom along the second opening slot, so that the needle tube Expose, and then pierce the needle tip of the needle tube into the venous vessel for blood drawing or infusion; after the blood drawing or infusion is completed, press the sheath with your hand and pinch the needle handle, and insert the needle tube from the venous vessel along the second open groove. Slowly pull out the needle handle, and continue to move the needle handle back until the needle handle slides past the second limit mechanism, and the needle handle is blocked by the second limit mechanism, so that the needle tube seat and the needle tube are fixed in the sheath, thereby preventing The exposed needle tube prevents the needle tube from accidentally stabbing people, which effectively improves safety.

In addition, the single-wing puncture needle sheath assembly proposed by the present invention can also have the following additional technical features:

Further, the first limiting mechanism is a boss structure.

Further, the second limiting mechanism is an upside-down barb structure.

Further, the number of the boss structures is two, and the two boss structures are respectively arranged at both ends of the first opening groove.

Furthermore, anti-slip lines are provided on the outside of the sheath.

Further, the needle handle is fan-shaped.

Further, the sheath, the needle hub, and the needle handle all use elastic members.

Another aspect of the present invention provides a needlestick-proof blood collection needle to improve safety. The blood collection needle includes the above-mentioned single-wing puncture needle sheath assembly, and also includes a needle tube, the needle tube is installed on the needle tube seat, the needle tube is arranged in the cavity of the sheath, and the needle tube can be placed in the The cavity of the sheath slides and rotates. Before the blood collection needle is used, the first limit mechanism clamps the needle handle in the first opening groove, so that the needle tube seat and the The needle tube is fixed in the cavity of the sheath; after the blood collection is completed, the blood collection needle pushes the needle handle toward the second limit mechanism until the second limit mechanism pushes the needle The handle is snapped so that the needle hub and the needle cannula are secured within the cavity of the sheath.

The above-mentioned blood collection needle further includes a blood collection catheter and a blood collection tube puncture needle connected with the blood collection catheter, and the blood collection catheter communicates with the needle tube.

Description of drawings

Fig. 1 is a schematic structural diagram of a blood collection needle provided by an embodiment of the present invention;

Fig. 2 is the structural representation of sheath in Fig. 1;

Figure 3 is a schematic structural view of the blood collection needle provided by the embodiment of the present invention before use (excluding blood collection catheter and blood collection tube puncture needle);

Fig. 4 is a schematic structural diagram of the blood collection needle provided by the embodiment of the present invention in use (excluding blood collection catheter and blood collection tube puncture needle);

Fig. 5 is a schematic diagram of the structure of the blood collection needle provided by the embodiment of the present invention after use (excluding the blood collection catheter and the blood collection tube puncture needle).

Detailed ways

In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. Several embodiments of the invention are shown in the drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present invention will be thorough and complete.

It should be noted that when an element is referred to as being “fixed on” another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "left," "right," "upper," "lower," and similar expressions are for descriptive purposes only and do not indicate or imply the device or Elements must have certain orientations, be constructed and operate in certain orientations, and therefore should not be construed as limitations on the invention.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Please refer to FIG. 1 to FIG. 5 , the blood collection needle provided by the embodiment of the present invention includes a single-wing puncture needle sheath assembly, a needle tube 30 , a blood collection catheter 40 , and a blood collection tube puncture needle 50 .

Wherein, the single-wing puncture needle sheath assembly includes a sheath 10, a needle tube holder 20 and a needle handle 60, the needle handle 60 is arranged on the needle tube holder 20, the needle tube 30 is installed on the needle tube holder 20, and the needle tube The seat 20 and the needle tube 30 are arranged in the cavity of the sheath 10 , and the needle tube seat 20 and the needle tube 30 can slide and rotate in the cavity of the sheath.

The needle handle 60 is fan-shaped to facilitate the handling of the product and the blood collection operation.

The blood collection catheter 40 is connected to the blood collection tube puncture needle 50 , and the blood collection catheter 40 communicates with the needle tube 30 . Specifically, the end of the needle tube base 20 facing away from the needle tube 30 is provided with a through hole for connecting the blood collection catheter 60. Since the structures of the blood collection catheter 40 and the blood collection tube puncture needle 50 are both common structures, they will not be described here. In addition, it should be pointed out that the blood collection catheter 40 can be omitted according to the actual situation, that is, directly connecting the blood collection tube puncture needle 50 with the needle tube holder 20 to perform the blood collection operation can also achieve the technical effect of the present invention. Whether the blood collection catheter 40 is included is not limited.

The sheath 10 is provided with a first opening groove 101 and a second opening groove 102 , and the first opening groove 101 communicates with the second opening groove 102 .

The first opening groove 101 is provided with a first limiting mechanism 11, and before the blood collection needle is used, the first limiting mechanism 11 clamps the needle handle 60 in the first opening groove 101, So that the needle tube holder 20 and the needle tube 30 are fixed in the cavity of the sheath 10 . It should be pointed out that the length of the sheath 10 should be appropriate to ensure that the needle tube 30 can be completely covered and the needle tube 30 should not be exposed.

Wherein, the first limiting mechanism 11 is specifically a boss structure with a protruding direction facing the needle tube 30 . In order to ensure that the first limiting mechanism 11 has the effect of limiting the position of the needle handle 60 , two boss structures can be provided, and the two boss structures are respectively arranged at both ends of the first opening groove 101 .

The second opening groove 102 is provided with a second limiting mechanism 12, the needle handle 60 can slide in the second opening groove 102, and at the same time, the second opening groove 102 can limit the needle handle 60, the needle tube holder 20 1. Slide the needle tube 30 to make it slide in a specified direction and distance.

Wherein, the second limiting mechanism 12 is specifically an upside-down thorn structure with a protruding direction facing the needle tube holder 20 .

After the blood collection needle is completed, the needle handle 60 is pushed toward the direction of the second limiting mechanism 12 until the second limiting mechanism 12 blocks the needle handle 60, so that the The needle tube holder 20 and the needle tube 30 are fixed in the cavity of the sheath 10 .

In this embodiment, in order to improve the use effect and prevent the sheath 10 from slipping in the hand, the outer surface of the sheath 10 is provided with anti-slip lines 70 . Some small cylinders can also be arranged on the anti-slip pattern 70 to increase the frictional force between the skin and the product, further preventing hand slipping.

The sheath 10, the needle hub 20, and the needle handle 60 may all use elastic members. For example, elastic plastic parts can be used.

According to the above-mentioned blood collection needle, before use, the needle handle 60 is stuck in the first opening groove 101 by the first limiting mechanism 11, so that the needle tube holder 20 and the needle tube 30 are fixed in the cavity of the sheath 10, preventing the needle tube 30 from Exposure causes product failure; when blood collection is required, hold the sheath 10 (specifically, the anti-slip pattern 70 ) with one hand, hold the needle handle 60 with the other hand, and push the needle handle 60 toward the second opening groove 102 , break it through the first limiting mechanism 11, so that the needle handle 60 falls from the first opening groove 101 into the second opening groove 102, then pinch the needle handle 60, and push it to the bottom along the second opening groove 102, so that The needle tube 30 is exposed, and then the needle tip of the needle tube 30 is inserted into the venous blood vessel to draw blood; Slowly pull out the needle tube 30 from the venous vessel along the second opening groove 102, and continue to move the needle handle 60 backward until the needle handle 60 slides past the second stop mechanism 12, and the needle handle 60 is pushed back by the second stop mechanism 12. Clamping makes the needle tube holder 20 and the needle tube 30 fixed in the sheath 10, thereby preventing the needle tube 30 from being exposed, avoiding the needle tube from accidentally stabbing people, and effectively improving safety.

It should be pointed out that, in practice, the single-winged puncture needle sheath assembly provided in this embodiment can be applied not only to blood collection needles, but also to infusion devices or other devices that require blood collection. For example, the above-mentioned When the single-wing puncture needle sheath assembly is assembled on the infusion set, the infusion set can be anti-needle. Therefore, any blood collection device or infusion device that adopts the single-wing puncture needle sheath assembly is covered by the protection of the present invention. within range.

The above-mentioned embodiments only express several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (9)

1. A single-winged puncture needle sheath assembly, characterized in that it comprises a sheath, a needle tube seat and a needle handle, the needle handle is arranged on the needle tube seat, and the needle tube seat is located in the hollow of the sheath cavity, and the needle base can slide and rotate in the cavity of the sheath, the sheath is provided with a first opening groove and a second opening groove, the first opening groove and the second opening The grooves communicate with each other, and a first limit mechanism is provided in the first open groove. Before use, the first limit mechanism is used to clamp the needle handle in the first open groove, so that the needle tube The seat is fixed in the cavity of the sheath; a second limit mechanism is provided in the second open groove, and the needle handle can slide in the second open groove. After use, the second limit mechanism The positioning mechanism is used to block the needle handle so that the needle tube seat is fixed in the cavity of the sheath. 2. The single-wing puncture needle sheath assembly according to claim 1, wherein the first limiting mechanism is a boss structure. 3. The single-wing puncture needle sheath assembly according to claim 2, wherein the second limiting mechanism is an upside-down puncture structure. 4. The single-wing puncture needle sheath assembly according to claim 2, wherein the number of the boss structures is two, and the two boss structures are respectively arranged on two sides of the first opening groove. end. 5 . The single-winged puncture needle sheath assembly according to claim 1 , wherein an anti-slip pattern is provided on the outside of the sheath. 6. The single-winged puncture needle sheath assembly according to claim 1, wherein the needle handle is fan-shaped. 7 . The single-wing puncture needle sheath assembly according to claim 1 , wherein the sheath, the needle tube seat, and the needle handle are all made of elastic members. 8. A blood collection needle, characterized in that it comprises the single-winged puncture needle sheath assembly according to any one of claims 1 to 7, and also includes a needle tube, the needle tube is installed on the needle tube seat, and the needle tube is provided with In the cavity of the sheath, and the needle tube can slide and rotate in the cavity of the sheath, before the blood collection needle is used, the first limit mechanism clamps the needle handle in the in the first opening groove, so that the needle tube holder and the needle tube are fixed in the cavity of the sheath; The direction of the mechanism is pushed until the second limiting mechanism blocks the needle handle, so that the needle tube seat and the needle tube are fixed in the cavity of the sheath. 9 . The blood collection needle according to claim 8 , further comprising a blood collection catheter and a blood collection tube puncture needle connected to the blood collection catheter, and the blood collection catheter communicates with the needle tube.